View state recommended for hide components?

When you change States and hiding components, what is the best practice?

Set the height/width = 0?

The value Visible/IncludeInLayout = False?

Or is there a better way?

State change cache components, why to explicitly hide components?

Tags: Flex

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    [Application termination requested.  Undeploying application DMSMultipleFileUploadUtility.]
     

    Why is-session time-out error is coming while 15 (small files in KBs) takes 15-20 sec download, what requirements for this error. Take a peek inside Timo Hahn

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    So, I'd be interested to see a case in the database pre - 10.2.0.4 where the optimizer actually using subpartition level statistics; I have not yet found one.

    Second, he must be aware of what Oracle offers several ways how to maintain the different level of statistics:

    -Less consumption of resources, but less quality: collection of statistics on the lowest level (e.g. subpartition) only. I hope all subparts of the partition have statistics, the higher levels (partition / global) will be inspired by the aggregation. This way, you get the low quality statistics on levels higher (e.g. no histograms will be generated by aggregation, number of distinct values potentially quite inaccurate), but you do not need to collect statistics on these levels. Note that if once you have collected statistics on the higher levels (indicated by the "GLOBAL_STATS = YES" column in the DBA_\ * views STATISTICS) will not perform this statistical aggregation. You must first remove the statistics of higher level using DELETE\ * _STATS have enabled new aggregation (next time gather you statistics on low levels and all partitions (sub-) have statistics)

    For more information about this approach, see for example here: http://oracle-randolf.blogspot.com/2008/04/exchange-partition-and-aggregated.html

    -Consumption of resources, but of better quality most: separate statistics on all levels

    - And the new modes supported by 10.2.0.4 and especially 11.1.0.6: APPROX_GLOBAL AND PARTITION (10.2.0.4), true incremental global statistics in 11.1.0.6 and the new algorithm for estimating AUTO_SAMPLE_SIZE introduced in 11g:

    http://structureddata.org/2008/07/16/Oracle-11g-incremental-global-statistics-on-partitioned-tables/

    http://structureddata.org/2007/09/17/Oracle-11g-enhancements-to-DBMS_STATS/

    http://optimizermagic.blogspot.com/2009/02/maintaining-statistics-on-large.html

    Another very good synthesis about the management of statistics has recently been published by Karen Morton: http://karenmorton.blogspot.com/2009/02/new-paper-and-cj-date-advert.html

    So in your case a database pre - 10.2.0.4 you should not bother with subpartition statistics at all (or you can show me otherwise I would be interested), and you can then try to find out if you could live with the above statistical approach of "sum" by simply collecting statistics on the level of partition, or if you need to collect statistics on the partition and the global level separately (you did not mention your current strategy to the global level statistics).

    If you install the 10.2.0.4 patch game you have several options and statistics subpartition can be used by the optimizer (but only in the case of beach-list composite partitioning, as far as I know), for example by using the option of PARTITION AND APPROX_GLOBAL introduced in this version. Note that you must install the unique patches to get this working properly as described by my post and the optimizer of blog post for the development group.

    Kind regards
    Randolf

    Oracle related blog stuff:
    http://Oracle-Randolf.blogspot.com/

    SQLTools ++ for Oracle (Open source Oracle GUI for Windows):
    http://www.sqltools-plusplus.org:7676 /.
    http://sourceforge.NET/projects/SQLT-pp/

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